Time-Frequency Analysis of EEG Signals and GLCM Features for Depth of Anesthesia Monitoring

Table 6

The effect of the number of gray levels of GLCM.

Number of gray levels	Subject						Average	Min	Max
	1	2	3	4	5	6
4	87.87	86.16	87.74	85.49	90.89	89.56	87.95	85.49	90.89
8	90.85	92.45	91.22	91.22	93.11	91.75	91.77	90.85	92.45
16	94.5	94.65	93.34	95.8	96.92	96.7	95.32	93.34	96.92
32	93.13	94.03	92.58	94.27	95.61	95.78	94.23	92.58	95.78
64	92.22	93.55	92.13	92.36	93.41	94.87	93.09	92.13	94.87